What does it mean for an order of plastic storage containers to be kept for inspection? It states- US arrives at the destination country's customs and is kept for inspection.

My parcel clearer customs One place then bow its under inspection on another location. What is going on? Anything i can do to fix? And what are they doing with package? LV748003892CN

Hi, my parcel RV494759204GB updated on the tracking site that it’s taxable mail to be paid & then it updated to inspection by customs and it’s been stuck there for 6 days now...how long does the inspection process usually take & will they contact me to pay the import duty?